Dieruff High School was put on lockdown Thursday afternoon at the request of Allentown police, who were in the neighborhood investigating a report of gunshots near the school on Irving Street.

Police received a report of gunshots around 2 p.m., but no injuries were reported and Assistant Chief Keith Morris would not say if anything was struck by gunfire.

Dozens of police officers closed off the areas behind the school. About 3 p.m., police lifted the lockdown and allowed students to leave the school, but would not let them cross the back of the property.

Police also utilized an evidence collection van near the school. Officers were using a metal detector in their search of the area and stopped several sport-utility vehicles.